Home / 78,218.12-116,320.98-75,726.96

Finding the Fourth Proportional to 78,218.12, 116,320.98 and 75,726.96

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Solution

The fourth proportional to 78,218.12, 116,320.98 and 75,726.96 is: 112,616.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,218.12 : 116,320.98 = 75,726.96 : x
  2. Step 2: Convert to fraction form
    78,218.12/116,320.98 = 75,726.96/x
  3. Step 3: Cross multiply
    78,218.12x = 116,320.98 × 75,726.96
  4. Step 4: Simplify right side
    78,218.12x = 8,808,634,199.62
  5. Step 5: Solve for x
    x = 8,808,634,199.62/78,218.12
  6. Step 6: Final answer
    x = 112,616.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.